Relevant bibliographies by topics / Strongly interacting quantum systems / Dissertations / Theses
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Dissertations / Theses on the topic 'Strongly interacting quantum systems'

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Published: 14 March 2023

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1

Kasztelan, Christian. "Strongly Interacting Quantum Systems out of Equilibrium." Diss., lmu, 2010. http://nbn-resolving.de/urn:nbn:de:bvb:19-124827.

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2

Antonio, R. G. "Quantum computation and communication in strongly interacting systems." Thesis, University College London (University of London), 2015. http://discovery.ucl.ac.uk/1469437/.

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Each year, the gap between theoretical proposals and experimental endeavours to create quantum computers gets smaller, driven by the promise of fundamentally faster algorithms and quantum simulations. This occurs by the combination of experimental ingenuity and ever simpler theoretical schemes. This thesis comes from the latter perspective, aiming to find new, simpler ways in which components of a quantum computer could be built. We first search for ways to create quantum gates, the primitive building blocks of a quantum computer. We find a novel, low-control way of performing a two-qubit gate
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3

Thomson, Steven. "The effects of disorder in strongly interacting quantum systems." Thesis, University of St Andrews, 2016. http://hdl.handle.net/10023/9441.

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This thesis contains four studies of the effects of disorder and randomness on strongly correlated quantum phases of matter. Starting with an itinerant ferromagnet, I first use an order-by-disorder approach to show that adding quenched charged disorder to the model generates new quantum fluctuations in the vicinity of the quantum critical point which lead to the formation of a novel magnetic phase known as a helical glass. Switching to bosons, I then employ a momentum-shell renormalisation group analysis of disordered lattice gases of bosons where I show that disorder breaks ergodicity in a no
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4

Carleo, Giuseppe. "Spectral and dynamical properties of strongly correlated systems." Doctoral thesis, SISSA, 2011. http://hdl.handle.net/20.500.11767/4289.

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In the first part of the Thesis we mostly concentrate on spectral properties of strongly correlated systems and on their equilibrium properties. This is accomplished by the general concept of imaginary-time dynamics which we apply to a number of different problems in which different strengths of this approach emerge. In Chapter 1 we introduce the formalism that allows for a connection between the quantum and the classical worlds. The connection is established by means of the imaginary-time quantum evolution which, under certain circumstances, is shown to be equivalent to a classical stochast
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5

Akhanjee, Shimul. "Classical and quantum aspects of strongly interacting one-dimensional systems." Diss., Restricted to subscribing institutions, 2008. http://proquest.umi.com/pqdweb?did=1679376391&sid=1&Fmt=2&clientId=1564&RQT=309&VName=PQD.

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6

Grover, Tarun Ph D. Massachusetts Institute of Technology. "Applied fractionalization : quantum phases and phase transitions of strongly interacting systems." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/68973.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 2010.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 131-136).<br>Strongly correlated systems present interesting challenges in condensed matter physics. On the one hand, the theoretical work in the last two decades suggests that strong interactions may lead to new phases and phase transitions of matter that don't fit paradigms such as Fermi liquid theory or Landau's theory of phase transitions. On the other hand, there are actual materials which are undoubtedly governed by strong int
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7

Yan, Mi. "Quantum Dynamics of Strongly-Interacting Bosons in Optical Lattices with Disorder." Diss., Virginia Tech, 2019. http://hdl.handle.net/10919/87432.

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Ultracold atoms in optical lattices offer an important tool for studying dynamics in many-body interacting systems in a pristine environment. This thesis focuses on three theoretical works motivated by recent optical lattice experiments. In the first, we theoretically study the center of mass dynamics of states derived from the disordered Bose-Hubbard model in a trapping potential. We find that the edge states in the trap allow center of mass motion even with insulating states in the center. We identify short and long-time mechanisms for edge state transport in insulating phases. We also argu
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8

Shotter, Martin David. "The development of techniques to prepare and probe at single atom resolution strongly interacting quantum systems ot uitracold atoms." Thesis, University of Oxford, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.526117.

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9

Romanovsky, Igor Alexandrovich. "Novel properties of interacting particles in small low-dimensional systems." Diss., Available online, Georgia Institute of Technology, 2006, 2006. http://etd.gatech.edu/theses/available/etd-07102006-041659/.

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Thesis (Ph. D.)--Physics, Georgia Institute of Technology, 2007.<br>Landman, Uzi, Committee Member ; Yannouleas, Constantine, Committee Member ; Bunimovich, Leonid, Committee Member ; Chou, Mei-Yin, Committee Member ; Pustilnik, Michael, Committee Member.
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10

Czischek, Stefanie [Verfasser], and Thomas [Akademischer Betreuer] Gasenzer. "Simulating Strongly Interacting Quantum Spin Systems–From Critical Dynamics Towards Entanglement Correlations in a Classical Artificial Neural Network / Stefanie Czischek ; Betreuer: Thomas Gasenzer." Heidelberg : Universitätsbibliothek Heidelberg, 2019. http://d-nb.info/119790431X/34.

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11

NAVA, MARCO. "TWO DIMENSIONAL AND NOVEL QUASI TWO DIMENSIONAL QUANTUM LIQUIDS." Doctoral thesis, Università degli Studi di Milano, 2013. http://hdl.handle.net/2434/216307.

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In this thesis we have used Quantum Monte Carlo techniques to study two systems that can be regarded as the archetype for neutral strongly interacting systems: 4He, and its fermionic counterpart 3He.More specifically, we have used the Path Integral Ground State and the Path Integral Monte Carlo methods to study a system of two dimensional 3He (2d-3He) and a system of 4He adsorbed on Graphene-Fluoride (GF) and Graphane (GH) at both zero and finite temperature. The purpose of the study of 4He on GF (GH) was the research of new physical phenomena, whereas in the case of 2d-3He it was the a
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12

Botzung, Thomas. "Study of strongly correlated one-dimensional systems with long-range interactions." Thesis, Strasbourg, 2019. http://www.theses.fr/2019STRAF062.

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Durant cette thèse, nous étudions des systèmes unidimensionnels avec des couplages longue-portée. Dans la première partie, nous démontrons que ces couplages entraînent une décroissance algébrique des corrélations dans des fils quantiques désordonnés. Deuxièmement, nous analysons un modèle étendu de Hubbard où les particules interagissent via un potentiel « soft-core » générant de nouvelles phases exotiques. Dans le troisième chapitre, nous démontrons que restaurer l’extensivité a une influence sur les propriétés de basse énergie de modèle quantique dans la limite thermodynamique. Finalement, n
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13

Dobrautz, Werner [Verfasser], and Ali [Akademischer Betreuer] Alavi. "Development of full configuration interaction quantum Monte Carlo methods for strongly correlated electron systems / Werner Dobrautz ; Betreuer: Ali Alavi." Stuttgart : Universitätsbibliothek der Universität Stuttgart, 2019. http://d-nb.info/1197056459/34.

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14

Wu, Cheng-Hsun Ph D. Massachusetts Institute of Technology. "Strongly interacting quantum mixtures of ultracold atoms." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/83817.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 2013.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 198-202).<br>This thesis describes the construction of a new apparatus for ultracold quantum gases as well as the scientific results this machine has produced so far. This new apparatus is capable of simultaneously cooling and trapping lithium, sodium, and potassium. It therefore provides a platform to study a large variety of quantum mixtures. Three main experimental results are presented. Firstly, the direct cooling of "K to Bo
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15

Jäckel, Jörg. "Effective actions for strongly interacting fermionic systems." [S.l. : s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=968788351.

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16

Pugh, Emma. "Pressure studies on strongly interacting electron systems." Thesis, University of Cambridge, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.621542.

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17

O'Connell, Heath B. "Vector meson models of strongly interacting systems /." Title page, abstract and table of contents only, 1996. http://web4.library.adelaide.edu.au/theses/09PH/09pho175.pdf.

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18

Williams, Ceri Rhys. "Quantum interacting branching systems." Thesis, University of Nottingham, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.416728.

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19

Mia, Mohammed Shahpur. "Vector meson properties in a strongly interacting thermal medium." Thesis, McGill University, 2007. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=101626.

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We analyze the hadronic phase of QCD using effective thermal field theory techniques. Our goal is to investigate the medium created in heavy ion collisions by calculating the electromagnetic emissivity of strongly interacting matter in the hadronic phase. We proceed through examining the vector meson properties in a thermal bath where the temperature reaches deconfinement and chiral symmetry is restored. In particular we observe the behavior of the rho spectral function in thermal medium and use it as a probe to examine the thermal environment generated in the collision.
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20

Gasbarro, Andrew David. "Studies of Conformal Behavior in Strongly Interacting Quantum Field Theories." Thesis, Yale University, 2019. http://pqdtopen.proquest.com/#viewpdf?dispub=13851872.

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<p>In this dissertation, we present work towards characterizing various conformal and nearly conformal quantum field theories nonperturbatively using a combination of numerical and analytical techniques. A key area of interest is the conformal window of four dimensional gauge theories with Dirac fermions and its potential applicability to beyond the standard model physics.</p><p> In the first chapter, we review some of the history of models of composite Higgs scenarios in order to motivate the study of gauge theories near the conformal window. In the second chapter we review lattice studies
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21

Fearon, Michael. "Theoretical studies of strongly interacting fine particle systems." Thesis, University of Central Lancashire, 1990. http://clok.uclan.ac.uk/20347/.

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A theoretical analysis of the time dependent behaviour of a system of fine magnetic particles as a function of applied field and temperature was carried out. The model used was based on a theory assuming Neel relaxation with a distribution of particle sizes. This theory predicted a linear variation of 5max with temperature and a finite intercept, which is not reflected by experimental observations. The remanence curves of strongly interacting fine-particle systems were also investigated theoretically. It was shown that the Henkel plot of the dc demagnetisation remanence vs the isothermal reman
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22

Bienias, Przemysław [Verfasser]. "Few-body quantum physics with strongly interacting Rydberg polaritons / Przemysław Bienias." München : Verlag Dr. Hut, 2017. http://d-nb.info/1147674302/34.

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23

Fehrmann, Henning. "Strongly correlated systems in ultracold quantum gases." [S.l.] : [s.n.], 2006. http://deposit.ddb.de/cgi-bin/dokserv?idn=981637442.

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24

Shevchenko, Pavel Physics Faculty of Science UNSW. "Quantum Phenomena in Strongly Correlated Electrons Systems." Awarded by:University of New South Wales. Physics, 1999. http://handle.unsw.edu.au/1959.4/32669.

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Quantum phenomena in high-Tc superconductors and dimerized quantum Heisenberg antiferromagnets are studied analytically in this thesis. The implications of the Fermi surface consisting of the disjoint pieces, observed in cuprate superconductors, are considered. It is demonstrated that in this case the g-wave superconducting pairing is closely related to d-wave pairing. The superconductivity in this system can be described in terms of two almost degenerate superconducting condensates. As a result a new spatial scale lg, much larger than the superconducting correlation length x, arises and a
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25

Ye, Bing. "Unconventional Quantum Phases in Strongly Correlated Systems." Thesis, Boston College, 2016. http://hdl.handle.net/2345/bc-ir:106990.

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Thesis advisor: Ying Ran<br>In this thesis, I investigated and implemented various numerical and simulation methods, including mean field theory, functional renormalization group method (fRG), density matrix renormalization group (DMRG) method etc., to find different quantum phases and quantum phase diagrams on models of correlated electronic systems. I found different phase diagrams with phases such as magnetism, superconductivity. By summarizing the strength and limitations of these methods, I investigated the projected entangled paired states (PEPS) with symmetry quantum number to sharply d
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26

Manmana, Salvatore Rosario. "Nonequilibrium dynamics of strongly correlated quantum systems." [S.l. : s.n.], 2006. http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-29095.

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27

Iles-Smith, Jake. "Excitation dynamics of strongly dissipative quantum systems." Thesis, Imperial College London, 2015. http://hdl.handle.net/10044/1/33203.

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Strong coupling between a quantum system and its many-body environment is becoming an increasingly important topic for many branches of physics. Numerous systems of experimental and technological relevance demonstrate strong system-environment coupling, leading to complex dynamical behaviour. This thesis is concerned with two particular examples of such systems, namely quantum dots (QDs) and excitonic energy transfer (EET) in molecular systems. Traditional quantum optics treatments are often insufficient to describe the transient, steady state, and optical properties of QDs due to system-envir
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28

Bennett, Edward. "Physical and computational applications of strongly-interacting dynamics beyond QCD." Thesis, Swansea University, 2013. https://cronfa.swan.ac.uk/Record/cronfa38186.

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In this thesis we investigate numerically SU(2) theories with Dirac—or Majorana—fermions in the adjoint representation. Majorana fermions have historically proven difficult to treat numerically; here, a change of basis is introduced that allows two Majorana fermions to be expressed in terms of one Dirac fermion. This also provides greater insight into the analysis of the properties of theories with Dirac fermions. Attention is focused on the SU(2) theory with a single Dirac flavour (or equivalently two Majorana flavours). Its lattice phase diagram, spectrum, and the anomalous dimension of the
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29

Stellin, Filippo. "Anderson localization in interacting quantum systems." Thesis, Université de Paris (2019-....), 2020. http://www.theses.fr/2020UNIP7004.

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Dans cette thèse nous étudions au niveau théorique le comportement des particules quantiques (électrons, atomes, photons, etc.) se mouvant dans un milieu désordonné et sujets à la localisation d’Anderson. Pour des particules non interagissantes, le spectre de l’énergie peut posséder un ou plus points critiques, où les fonctions d’onde étendues deviennent localisées, en donnant lieu à une transition de phase métal-isolant connue comme Transition d’Anderson.Une question fondamentale est si et comment les transitions d’Anderson survivent dans des systèmesquantiques interagissants. Dans cet ouvrag
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30

Klugkist, Joost André. "Mechanisms for photonic switching in systems of strongly interacting dipoles." [S.l. : [Groningen : s.n.] ; University Library Groningen] [Host], 2008. http://irs.ub.rug.nl/ppn/306046253.

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31

Bayani, Babak [Verfasser]. "Interacting quantum-dissipative tunnelling systems / Babak Bayani." Mainz : Universitätsbibliothek Mainz, 2012. http://d-nb.info/1019453125/34.

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32

Bonnet, Jacqueline A. [Verfasser]. "Phase transitions in strongly interacting quantum field theories: QED_3 vs. QCD / Jacqueline A. Bonnet." Gießen : Universitätsbibliothek, 2013. http://d-nb.info/1065462670/34.

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33

Bridgeman, Jacob. "Tensor Network Methods for Quantum Phases." Thesis, The University of Sydney, 2017. http://hdl.handle.net/2123/17647.

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The physics that emerges when large numbers of particles interact can be complex and exotic. The collective behaviour may not re ect the underlying constituents, for example fermionic quasiparticles can emerge from models of interacting bosons. Due to this emergent complexity, manybody phenomena can be very challenging to study, but also very useful. A theoretical understanding of such systems is important for robust quantum information storage and processing. The emergent, macroscopic physics can be classi ed using the idea of a quantum phase. All models within a given phase exhibit similar l
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34

Liu, Jun. "Quantum phases in frustrated strongly correlated 2-D systems." [Ames, Iowa : Iowa State University], 2007.

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35

Kriel, Johannes Nicolaas. "A duality construction for interacting quantum Hall systems." Thesis, Stellenbosch : University of Stellenbosch, 2011. http://hdl.handle.net/10019.1/6749.

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Thesis (PhD)--University of Stellenbosch, 2011.<br>ENGLISH ABSTRACT: The fractional quantum Hall effect represents a true many-body phenomenon in which the collective behaviour of interacting electrons plays a central role. In contrast to its integral counterpart, the appearance of a mobility gap in the fractional quantum Hall regime is due entirely to the Coulomb interaction and is not the result of a perturbed single particle gap. The bulk of our theoretical understanding of the underlying many-body problem is based on Laughlin’s ansatz wave function and the composite fermion picture pr
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36

Wynen, Jan-Lukas [Verfasser]. "Strongly interacting few-body systems from lattice stochastic methods / Jan-Lukas Wynen." Bonn : Universitäts- und Landesbibliothek Bonn, 2020. http://d-nb.info/1219140198/34.

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37

Mikelsons, Karlis. "Extensions of Numerical Methods for Strongly Correlated Electron Systems." University of Cincinnati / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1256909270.

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38

Van, Vlack Cole. "Time dependent complex scaling: Quantum dynamics in strongly perturbed systems." Thesis, University of Ottawa (Canada), 2008. http://hdl.handle.net/10393/28032.

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We have begun development of a tool for investigating the bound state dynamics of single electron systems in intense fields. This was done by implementing the method of uniform complex scaling in a 1D test system in two different ways and have shown that the use of the "c-norm" in non-Hermitian quantum mechanics can fail for time dependent simulations. We have developed the method of complex backscaling which transforms the wavefunction from the complex scaled space back into real space and have shown that it is more robust than the "c-norm" and predicts the correct ionization when compared to
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39

Saelen, Lene. "Quantum control of strongly coupled dynamics in few component systems." Paris 6, 2009. http://www.theses.fr/2009PA066768.

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Ce travail concerne l’étude théorique et la modélisation de la dynamique du nuage électronique de systèmes quantiques simples ou modèles soumis à une perturbation extérieure dépendante du temps, dans des échelles de temps allant de la picoseconde à l’attoseconde. Les systèmes étudiés vont de molécules diatomiques ionisées par impact d’ions multichargés rapides à des systèmes mésoscopiques, de type boîte quantique moléculaire ou anneau quantique, en présence d’un champ électromagnétique dépendant du temps. La ligne directrice de ce travail a consisté à résoudre dans ces différents contextes l’é
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40

Pietikäinen, I. (Iivari). "Strong radiation-matter interaction in a driven superconducting quantum system." Doctoral thesis, Oulun yliopisto, 2019. http://urn.fi/urn:isbn:9789526222479.

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Abstract In this thesis we study the interaction between radiation and matter using superconducting circuits that behave analogously with the conventional photon-atom interaction in quantum optics. The research is done with a system consisting of a waveguide resonator (radiation) strongly coupled to a transmon device (matter). We focus on the phenomena caused by strong coupling between the radiation and matter, and by driving the resonator to higher excited states with a strong monochromatic radiation. These have been studied little in the traditional radiation-matter systems. Increasing the s
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41

Vilardi, Demetrio [Verfasser], and Walter [Akademischer Betreuer] Metzner. "Functional renormalization group for strongly interacting Fermi systems / Demetrio Vilardi ; Betreuer: Walter Metzner." Stuttgart : Universitätsbibliothek der Universität Stuttgart, 2019. http://d-nb.info/1183678509/34.

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42

Wendt, Kyle Andrew. "Advances in the Application of the Similarity Renormalization Group to Strongly Interacting Systems." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1375205117.

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43

Rau, Sebastian [Verfasser]. "Optimal Control of interacting Quantum Particle Systems / Sebastian Rau." München : Verlag Dr. Hut, 2013. http://d-nb.info/1042308470/34.

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44

Kerner, Joachim Friedrich. "Interacting many-particle systems on general compact quantum graphs." Thesis, University of London, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.603454.

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In this thesis, we discuss many-particle systems on general compact quantum graphs. The results cover systems of distinguishable particles as well as systems of bosons or fermions. The main focus lies on the introduction of many-particle interactions in order to establish a useful model regarding many-particle quantum chaos 811d onc-dimensional Bose-Einstein condensation (BEC). Using suitable quadratic forms, we will characterise self-adjoint realisations of the two- and many-particle Laplacian which incorporate two different types of interactions, i.e. singular interactions localised at the v
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45

Kovacs, E., and Z. Gulacsi. "Exact ground states for quasi 1D systems with hubbard interaction." Thesis, Sumy State University, 2011. http://essuir.sumdu.edu.ua/handle/123456789/20658.

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Using a positive semidefinite operator technique we deduced exact ground states for a modified diamond chain described by a non-integrable Hubbard model with on-site repulsion. Our results are valid for arbitrary length of the chain and strength of the Hubbard interaction. For the analyzed quasi 1D chain structure we found that two flat bands are present in the bare band structure of the system, both for zero and for a fixed value of magnetic field. We obtained ground states of nonmagnetic and ferromagnetic insulator type and studied their physical properties. When you are citing the document,
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46

Raum, Peter Thomas. "Exact Diagonalization Studies of Strongly Correlated Systems." Diss., Virginia Tech, 2020. http://hdl.handle.net/10919/96440.

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In this dissertation, we use exact diagonalization to study a few strongly correlated systems, ranging from the Fermi-Hubbard model to the fractional quantum Hall effect (FQHE). The discussion starts with an overview of strongly correlated systems and what is meant by strongly correlated. Then, we extend cluster perturbation theory (CPT), an economic method for computing the momentum and energy resolved Green's function for Hubbard models to higher order correlation functions, specifically the spin susceptibility. We benchmark our results for the one-dimensional Fermi-Hubbard model at half-fil
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47

Piga, Angelo. "Entanglement and Bell correlations in strongly correlated many-body quantum systems." Doctoral thesis, Universitat Politècnica de Catalunya, 2020. http://hdl.handle.net/10803/669100.

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During the past two decades, thanks to the mutual fertilization of the research in quantum information and condensed matter, new approaches based on purely quantum features without any classical analog turned out to be very useful in the characterization of many-body quantum systems (MBQS). A peculiar role is obviously played by the study of purely quantum correlations, manifesting in the “spooky” properties of entanglement and nonlocality (or Bell correlations), which ultimately discriminate classical from quantum regimes. It is, in fact, such kind of correlations that give rise to the pletho
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48

Saberi, Hamed. "Matrix-product states for strongly correlated systems and quantum information processing." Diss., lmu, 2009. http://nbn-resolving.de/urn:nbn:de:bvb:19-97552.

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49

Chudnovsky, Victor 1974. "Strongly coupled systems : from quantum antiferromagnets to unified models for superconductors." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/29895.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 2002.<br>Includes bibliographical references (p. 109-118) and index.<br>I discuss the significance of the antiferromagnetic Heisenberg model (AFHM) in both high-energy and condensed-matter physics, and proceed to describe an efficient cluster algorithm used to simulate the AFHM. This is one of two algorithms with which my collaborators and I were able to obtain numerical results that definitively confirm that chiral perturbation theory, corrected for cutoff effects in the AFHM, leads to a correct field-theoretical descri
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50

Robinson, Neil Joe. "Pairing, paramagnetism and prethermalization in strongly correlated low-dimensional quantum systems." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:167d164c-e318-49b3-83ea-69b54ec531e0.

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Quasi-one-dimensional quantum models are ideal for theoretically exploring the physical phenomena associated with strong correlations. In this thesis we study three examples where strong correlations play an important role in the static or dynamic properties of the system. Firstly, we examine the behaviour of a doped fermionic two-leg ladder in which umklapp interactions are present. Such interactions arise at special band fillings and can be induced by the formation of charge density wave order in an array of two-leg ladders with long-range (three-dimensional) interactions. For the umklapp wh
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